linux-kernel - Re: [PATCH 03/13] jump label v9: x86 support

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Message-ID: <20100610121440.GA20130@elte.hu>
Date:	Thu, 10 Jun 2010 14:14:40 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Jason Baron <jbaron@...hat.com>, linux-kernel@...r.kernel.org,
	mathieu.desnoyers@...ymtl.ca, hpa@...or.com, tglx@...utronix.de,
	rostedt@...dmis.org, andi@...stfloor.org, roland@...hat.com,
	rth@...hat.com, mhiramat@...hat.com, fweisbec@...il.com,
	avi@...hat.com, davem@...emloft.net, vgoyal@...hat.com,
	sam@...nborg.org
Subject: Re: [PATCH 03/13] jump label v9: x86 support


* Peter Zijlstra <peterz@...radead.org> wrote:

> On Wed, 2010-06-09 at 17:39 -0400, Jason Baron wrote:
> > +       select HAVE_ARCH_JUMP_LABEL if !CC_OPTIMIZE_FOR_SIZE
> 
> That deserves a comment somewhere, it basically makes OPTIMIZE_FOR_SIZE 
> useless...

Hm, we need more than a comment for that - distros enable CC_OPTIMIZE_FOR_SIZE 
all the time, for the massive kernel image (and hotpath cache footprint) 
savings. Is this fixable?

Thanks,

	Ingo

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